Chimney Repair, Repointing & Removal — Toronto GTA

Chimney inspection only: $300–$600. Cap and crown repair: $400–$1,200. Upper-section repointing (typical 4–8 ft above roof): $1,500–$3,500. Full top-to-bottom repointing: $4,000–$8,000. Stainless flue liner: $2,500–$5,000. Partial removal: $2,500–$5,000. Full removal + roof patch + interior drywall closure: $4,000–$15,000 depending on size, height, scaffolding, and interior finish. Heritage premiums apply where lime-mortar specification or Heritage Permit is needed.

Modern high-efficiency gas furnaces (90%+ AFUE, condensing) vent through a small PVC pipe out the side wall — the chimney is no longer needed. Heat pumps don't need a chimney at all. When the furnace is replaced, the chimney becomes a maintenance liability with no functional role: $1,500–$5,000 every 10–15 years to repoint, roof-leak risk if cap or flashing fails. Removing the chimney typically pays back in 8–15 years through avoided maintenance, plus eliminates the leak risk entirely.

Possibly. Chimneys on heritage-character frontages in Heritage Conservation Districts (Cabbagetown, Riverdale, Annex, Wychwood, parts of the Beaches and Leslieville) often require Heritage Permit review for visible exterior changes — including removal. Rear or interior chimneys typically don't trigger heritage review. We screen at the site visit and tell you honestly which path your project is on. Heritage Permit adds 6–12 weeks.

Original Toronto chimneys use lime-mortar joints, not Portland-cement. Repointing a heritage brick chimney with hard Portland (Type N or S) cement on soft lime brick accelerates deterioration: the cement is harder than the brick, freeze-thaw cycles drive water into the brick rather than the joint, and the brick faces spall (chip off) over 10–20 years. Best practice is lime-based repointing mortar (Type O or K with hydrated lime) matched to the original character. Our mason partner specifies the correct mortar at the site visit.

Yes. Masonry repointing and brick repair is performed by licensed mason partners (we coordinate the brick scope). Roof patching and flashing after chimney removal is performed by RenoHouse trades (roofing certification held in-house) or by licensed roofing partners for premium-tier roofs. WSIB covered. Permit pulled when scope triggers it. The customer has one contract with us covering the entire scope.

Most chimney leaks come from one of four sources: (1) deteriorated mortar in the upper section (water enters joints, freezes, spalls), (2) failed cap or crown (water pours straight down the flue), (3) failed flashing where the chimney meets the roof (most common), (4) cracked or porous brick faces. Diagnosis at the site visit identifies the source — many 'chimney leaks' are actually flashing failures fixed without touching the brick. We do not chase symptoms; we identify the root cause.

Site visit and quote: 60–90 minutes. Permit screen and Heritage Permit (if applicable): 4–12 weeks. Removal day(s): 1–3 days for the masonry demo + roof patch (depending on chimney size, height, scaffolding requirements). Interior chase reclosure (drywall + paint): 2–4 days. Total clock 4–8 weeks contract-to-completion when no Heritage Permit; 12–20 weeks if Heritage Permit applies.

Possibly — color match is the biggest concern with mid-life roofs. Shingles fade with age, and a fresh patch is visible against an aged surrounding roof. We mitigate by (a) sourcing the closest-color-match shingle from manufacturer current production, or (b) recommending a partial re-shingle of the affected slope when the roof is older (10+ years) and the patch would never blend. We're transparent at the site visit about which approach makes sense for your roof age and color.

Older gas appliances (pre-1995 furnaces, water heaters) often vent up through the masonry chimney. When the chimney is decommissioned, the appliance must either (a) be replaced with a side-vent high-efficiency model that vents through a wall, or (b) be re-vented to a different masonry or B-vent path. Decommissioning of the gas line at the base of an old chimney is performed by our TSSA G2 gas-fitter partner under permit. We coordinate the gas-fitting scope with the masonry removal so there's no gap or overlap.

Yes. Partial removal (down to attic level, eliminating the exposed-above-roof section while retaining the interior structure) costs $2,500–$5,000 and is appropriate when the lower chimney is sound but the upper portion is failing. Roof patch and interior drywall closure are reduced scope vs. full removal. The interior chimney chase remains as a structural element. We assess the lower portion's condition before recommending partial vs. full removal.